This bug is awaiting verification that the linux- bluefield/5.15.0-1040.42 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-done-jammy-linux-bluefield'. If the problem still exists, change the tag 'verification-needed-jammy-linux-bluefield' to 'verification-failed-jammy-linux-bluefield'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-jammy-linux-bluefield-v2 verification-needed-jammy-linux-bluefield -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-bluefield in Ubuntu. https://bugs.launchpad.net/bugs/2059310 Title: mlxbf_gige: call request_irq() after NAPI initialized Status in linux-bluefield package in Ubuntu: New Status in linux-bluefield source package in Jammy: Fix Committed Bug description: SRU Justification: [Impact] The mlxbf_gige driver encounters a NULL pointer exception in mlxbf_gige_open() when kdump is enabled. The exception happens because there is a pending RX interrupt before the call to request_irq(RX IRQ) executes. Then, the RX IRQ handler fires immediately after this request_irq() completes. The RX IRQ handler runs "napi_schedule()" before NAPI is fully initialized via "netif_napi_add()" and "napi_enable()", both which happen later in the open() logic. [Fix] The logic in mlxbf_gige_open() must fully initialize NAPI before any calls to request_irq() execute. [Test Case] * Boot BF platform and bring up "oob_net0" interface * Enable kdump completely * Trigger kdump via "echo c > /proc/sysrq-trigger" * There should be no exceptions from mlxbf_gige driver [Regression Potential] There is low potential for regression as this brings in upstream content. [Other] None To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/2059310/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
